Rotary brush.



2 SKEBTl-BEEET 1.

INVENLIV'ORQI BATENTED JUNE 18, 1901.

B. KERmJR. ROTARY BRILSH. APPLI UATIOK FILED JULY 18, 1904.

ROTARY To all whom it may concern;

Be it known that I, BERNARD KERN; Jr., a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Rotary Brushes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin drawings, and to the letters and figures of re erence marked thereon, which form a part of this specification.

My invention relates to improvements in rotary brushes or brooms, and is especially designed in View of the needs of street sweep.' ing machines in which a forced draft is employed inconjunction with a revolving brush or broom to remove the dust and dirt from the surface of the street and deposit the same in a suitable receptacle associated with the machine.

An object of my invention is the provision of an improved construction of brush or broom that is so mounted on its shaft as to permit it to have a lateral movement independent of such shaft whereby to adapt it BERNARD KERN, JR.

Specification of Letters Patent. Application filed July 18, 1904. Serial No. 216,959.

, or TOLEDO, OHIO. 7

PATENT OFFICE.

BRUSH.

I Patented June 18, 1907.

more dependently movable sections or brooms embodying my invention are mounted on a common shaft. Fig. 6 is an end view of the inner broom section of Fig. 5. Fig. 7 is a central transverse section, and Fig. 8 an end view of one of the hubs of a .broomsection,

and Fig. 9 is a fragmentary end view ofa street sweeping machine and a central longitudinal section of my invention adjusted in position to clean a gutter. v

Referring to the drawing, represents a shaft on which one or more sections of the broom comprising my invention are mounted the number of such sections depending upon the requirements of the use to which it may be applied. The skeleton or frame of a broom section comprises the two circular end castings 8 and the bracing-rods 11, which latter have their ends rigidly secured to said castings and retain them in properly-spaced position. The periphery of each casting 8 is formed with a plurality of equi-distant transverse pockets 8 for receiving the ends of the steel brushes 12 and fiber brushes ]3, which are alternately arranged around the same as shown in Fig. 2. These brushes are each formed by case may beabout a retaining rod 12 and during rotation to accommodate itself to the changing contour of the surface over which it operates. v

A further'object ofmy invention is the provision of improved means within each 'broom section whereby the rows of fiber brushes may be radially adjusted to com ensate for wear, which willbe greater on t em than on the steel brushes." L

A further object of my invention is the rovision of sim le and eflicient means for ongitudinally aciiusting the broom sections whereby they are placed in proper position for cleaning a gutter or for other p oses.

. The operation, arrangement and etails of construction of the parts of my invention are. fully described in the following specification, and shown in the accompanying drawings, in which,

Figure 1 is a central longitudinal-section of the brush or broom comprising my invention. Fig. 2 is a transverse section of the same taken on the dotted line.:raz inFig. 1.

clamping the looped portions rigidly against the-retaining rod by means of the longitudirial clamping-plates 12 The pockets 8 in which the steel brushes are secured each have looping the steel or fiber, as the their outer faces formed with a slot 8? a portion of their depth, as shown in Fig. 7 to enable the outer ends of the rods 12* of the steel brushes to extend therethrough, idly locked against movement in by means ofa tightening band 12, which surrounds the-ends of said rods, as shown. The band 12 is retained in position on said rods by reason of the extremities of each rod being thereon. y

In the construction of machine both steel and fiber brushes a're employed, as the former operates to free the dirt and packed adhesive substances from the surface of the pavement, and the latter operates to lift and set in motion the dust and finer particles ed and drawn within a conduit associated with the machine by the action of an airand are rig- Figs. 3 and 4 are details of the means employed for securing the rows of brushes to the frame of the broom. Fig. 5 is a detail of the I 5 5 broom frame-work employed where three or i .draft created therein. substances are arranged in alternate rows. around the peripheries of the connected castsaid pockets of dirt'so that they may be lifte the brooms of my These different brush I IIO - ings 8, the fiber brushes having their ends tertated by means of a secured therein as the steel brushes having their retaining rods 12 passed through and terminating withoutv rigidly secured minating within the pockets 8'? and being hereinafter described, and

the slots 8 in saidend castings and being securedtherein, as above descri ed.

A sleeve 14 is loosely carried by the shaft 5 intermediate of the end castings 8 of each broom section and has its ends threaded, as shown at 1'4, threaded collars 14 corresponding to the number of fiber brushes 13 employed in a broom section, are pivotally secured atone end to a peripheral flange or shoulder on each of the collars 14 and have their outer ends pivotally attached to the metal clamping strips 12 of said brushes near theouter ends thereof, thereby causing the fiber brushes 13 to be raised or lowered within the pockets 8 radial pins 16 rigidly projecting therefrom with their inner ends loosely resting in a peripheral groove 16 on said sleeve, thereby preventing, a longitudinal movement of the sleeve 14 on the shaft 5. It will thus be seen that as the fiber brushes 13 wear and become shorter thanv the steel brushes, which is occasioned by reason of the softer character of the former, the said fiber brushes may be raised a sufiicient distance to bring the outer edges thereof in a plane with those of the contiguous steel brushes.-

In the operation of machines, for instance, such as street swe ers, in which rotary brushes are employe it is found that some provision should be made whereby the broom sections may-each be permitted to have a lateral movement independent of the shaft on which they are mounted to accommodate themselves to any unevenness in, or the changing contour of, a pavement. I accomplish this by forming the hubs of each end casting 8 with enlarged bearing apertures 9, so that the shaft 5 rests loosel therein to permit of a desired amount of ateral play, as shown. The broom sections are cause revolve with the shaft 5 by reason of the bearings 9 of the outer end castin s ofthe associated sections being providef with recesses or grooves for receiving the cogs or spurs of a pinion 10, which is keyed to the shaft, as shown in Figs. 5, 7 and 8. Should itbe deings 8 of the outer broom sections and loosely contiguous'ends of the inner sections. The sockets 17* are made sufficientlylarge to perto receive the interhallyf A number of rods 14,

tion 5 is provided with a per comes in contact with a curbstoneor other dto.

tions, as shown in Fig. .5, the inner brush sections are revolved by means of a ser1es of pins 17 ,which project from the inner end castoperate within sockets 17, formed on the I mit of the ends'of the inserted pins to have a lateral play therein to allow for the independent lateral movement of the broom sections as they follow the changing contour of the avemen-t.

T e broom-shaft 5 is made longitudinally extensible to enable it to carry a gutter broom should it be employed in a street sweeping machine, as shown in Fig. 9. In this figure 18 represents portions .of the framework of a street sweeping machine from either side of which are suspended the brackets 01' hanger-arms, 19.

forwardly-projectin arms 21 loosely pivoted thereto, both of w 'ch have bearings provided in their forward extremities, in one of which is mounted the broom-carrying shaft 5 and in the other a longitudinally alining shaft section 5. The inner end of the shaft sec- 'pheral flange 22 and with an axial socket 22, which latter is ada ted to receive the contiguous end of the sha t 5 when in normal position, and be rigidly secured thereto by a bolt or cotter in. The extension of the s aft 5 is accomplis ed by securing a peri herally-flanged sleeve 23' to .the inner end of the shaft 5 and then inserting a shell 24 of suitable length between 5, the-end ieces 24 of the shell bein securely bolte tov the flanges on the end 0 the shaft section 5* and the sleeve 23. A coiled compression s ring 25 is mounted in the shell 24 with its en s in abutting osition against the end pieces 24" of the shell ment of the shaft 5 and associated bro om sections when the flanged is threaded to the outer end of the shaft obstacle. The shell 24 is permitted to have a limited sliding movement with respect to one of its end pieces 24 by reason of a series of lugs or pins 27 on suc end piece operating within the elon ated slots 27 provided in said shell. The Shaft 5 is mounted is also permitted to have a longitudinal movement with the shaft 5 by reason of its sliding on the shaft 20.

Numerous wayls may moving one of t e broom sections frombetween the arms extended and then placing it on the extended end thereof, one, method being to remove the inner broom section from the severed end of the shaft prior to the placing of the sleeve 23 and is adapted to permit of a longitudinally yielding movebinding nut 26,'which I aring arm 21 in which thebe provided for rei 21 to enable the shaft 5 to be In these two i brackets is journaled a shaft 20 having the extended 'endjof the shaft. v, Having thus described my invention, what extending from the said-opening, and a pinion carried by the shaft and having its teeth loosely meshing with the recesses in the shaft-receiving opening of the broom wherel clalm as new and desire to secure by Letters Patent, is-' l. A rotary broom having two spaced end castings provided with radially-disposed perlpheral pockets, a plurality of steel brushes by to impart rotatlon to and permit of lateral and fiber brushes having their ends mounted play of the broom on the shaft. in alining pockets in the opposite end cast- 8. A shaft com rising two separable sec: ings, the fiber brushes being movably mount tions, one of whic sectlons is longitudinall ed and the steel brushes rigidly mounted in their respective pockets, and means within the broom having connection with each fiber brush for radially adjusting said fiber brus es.

shaft section, a longitu mally yiel ing spaclng member removably shaft section to extend broom comprising a shell, a v r and a broom mounted on the extended end of clrcumferentlally mounted on said shell, the the shaft.

2o fiber rushes being radially adjustable, rota- 9. Two shaft bearing members, a sectional tab e means mounted within the, shell and shaft having one section mounted in one having connection with the fiber brushes for bearin member and prevented from longiof steel brushes and fiber brushes a leeve loosely mounted on the broom-shaft internally of said broom, collars threaded to the ends of said sleeve, connecting rods pivotedto the collars and fib'erbrushes whereby said fiber brushes are adjusted by a longitudinal movement of said collars, and I tudinally movable section is extended beyond its bearing, and a rotary broom moun .ed on the extended section.

10. A rotary broom carrying shaft comprising two separable sections, one of which -1s longitudina ly movable in its bearing, bearings in which the shaft 4. shaft comprising two separable secmounted, a spacing member secured betions capable of having their inner ends tween the contiguous ends of the shaft secplaced in abutment and secured together, tions whereby to cause a portion of the lon 1- one of said sections being longitudinally adtudinally movable section to extend beyond justable in its bearing, its bearing, said spacing member comprising a having relatively movable ends, and

the adjustable section to be extended withbearing, and a broom carried by the extended end of the shaft.

rotary broom consisting of rigidly spaced end castings having radially-disposed peripheral p0 than said s aft tions of the inner broomsections,

inner faces of the outer room sectionsand extending loosely within the sockets in the contiguous ends of the inner broomsection to im art rotation thereto and ermit a limited independent lateral playof the sections. t 12. A rotary broom carrying shaft comrushsections a justably secured in others prising two se arable sections, one of which of said pockets, and means inclosed within is longitudina ly movable in its b a the broom for radially adjusting said latter' bearing for each shaft sectlon,

rush sections.

i mg means removably secured between the 7. The combination wlth a shaft, of a contiguous ends of the shaft sections, said rushes in the pockets. A rotatable shaft, a broom comprising rigidly'connected end castings mounted on said shaft and having radially elongated pockets provided in the peri hery thereof, a series of brush sections rigi ly secured, in a portion of said ockets, a second series of adjustable in its bearing, a bearm' for eac 1 4 endgame means comprising a shell having its ends 1'0l8sthe shaft, and means for causing the broom tivel movable axially of the shaft and seto revolve with the shaft. cure to the contiguous ends of the shaft seo- 14. In combination, a rotary broom havtions whereby to permit of a slight longitudiing an axial opening therethrough, a shaft 20 5 nal movement. ofithe extended section, and a extending through said opening and being of s gring mounted within the shell with its ends less diameter than said 0 ening whereby to a a uttm the shell ends and a broom section ermit of lateral lay of t e broom thereon carried y the extended shaft section at each: hearings for the s aft, and means for causing side of its bearing. the broom to revolve with the shaft. 2 5 I0 13. The combination with a shaft the In testimony whereof I have hereunto bearings therefor, and means for extending a signed my name to this specification in the ortion of the shaft beyond one of the bearpresence of two subscribin witnesses mgs, of a broom mounted on the extended 1 A BERNA D KERN, JR. portion of the shaft and having its shaft re- Witnesses".- I 5 oeiving opening of greater diameter than the WILBEB A. ,OWEN,

shaft whereby to permit of lateral play on CORNELL SOHREIBERY. 

